EUA2069 ds2069 ver1.3 dec. 2015 1 2w high efficiency mono class-d audio power amplifier with non-clip, power limit description the EUA2069 is a high efficiency, low noise, class- d audio power amplifier. a low noise, filterless pwm architecture eliminates the output filter, reducing external component count, system cost, and simplifying desig n. the power amplifier, having power limit interlock n on-clip function, controls gain automatically and prevents output signals from being clipped at the supply voltage. m oreover, EUA2069 permits an accurate output in the entire su pply voltage range of battery (3.3v to 4.3v) with the ne w architecture of charge pump. EUA2069 has three outp ut power modes: 0.8w, 1w and 1.2w, speakers with rated power of 0.7w or higher is recommended. and with th e efficiency up to 82%, EUA2069 increases the working time of the smart phone greatly. furthermore, EUA2069 also integrates over current a nd over temperature protection functions, dc output protection function and emi noise and the pop noise reduction functions. the EUA2069 is available in space-saving 1.8mm1.82 mm wcsp-16 packages. typical application circuit features unique modulation scheme reduces emi emissions unique non-clip function, variable ncpa, ncpb, ncpc, ncpoff mode select short circuit auto-recovery low quiescent current and shutdown current optimized pwm output stage eliminates lc output filter fully differential design reduces rf rectification and eliminates bypass capacitor overcurrent protection function (ocp) overtemperature protection function (otp) dc output protection function (dcop) power limit function 2w 8- load at vdd =4.2v, thd+n <10% 1.8mm1.82mm wcsp-16 package rohs compliant and 100% lead(pb)-free halogen-free applications smart phones/cellular phones portable multimedia players figure1.
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